package com.wufun.overseas.zxing.v1.qrcode;


import android.content.Context;
import android.graphics.Bitmap;
import android.text.TextUtils;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.QRCodeWriter;
import com.wufun.baselibrary.utils.DensityUtil;

import java.util.Hashtable;

public class QRCodeUtil {

	private  static int QR_WIDTH , QR_HEIGHT ;

	public static Bitmap createQRImage(String url, Context context) {
		if (TextUtils.isEmpty(url)) {
			return null;
		}


		QR_WIDTH = DensityUtil.dp2px(context , 200);
		QR_HEIGHT = DensityUtil.dp2px(context , 200);
		
		Bitmap bitmap = null;
		try {
			Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
			hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
			// 图像数据转换，使用了矩阵转换
			BitMatrix bitMatrix = new QRCodeWriter().encode(url,
					BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);
			int[] pixels = new int[QR_WIDTH * QR_HEIGHT];
			// 下面这里按照二维码的算法，逐个生成二维码的图片，
			// 两个for循环是图片横列扫描的结果
			for (int y = 0; y < QR_HEIGHT; y++) {
				for (int x = 0; x < QR_WIDTH; x++) {
					if (bitMatrix.get(x, y)) {
						pixels[y * QR_WIDTH + x] = 0xff000000;
					} else {
						pixels[y * QR_WIDTH + x] = 0xffffffff;
					}
				}
			}
			// 生成二维码图片的格式，使用ARGB_8888
			bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,
					Bitmap.Config.ARGB_8888);
			bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);
			
		} catch (WriterException e) {
			e.printStackTrace();
		}
		return bitmap;
	}
	
	public static Bitmap createQRImage(String url, int width, int height) {
		if (TextUtils.isEmpty(url)) {
			return null;
		}
		
		Bitmap bitmap = null;
		try {
			Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
			hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
			// 图像数据转换，使用了矩阵转换
			BitMatrix bitMatrix = new QRCodeWriter().encode(url,
					BarcodeFormat.QR_CODE, width, height, hints);
			int[] pixels = new int[width * height];
			// 下面这里按照二维码的算法，逐个生成二维码的图片，
			// 两个for循环是图片横列扫描的结果
			for (int y = 0; y < height; y++) {
				for (int x = 0; x < width; x++) {
					if (bitMatrix.get(x, y)) {
						pixels[y * width + x] = 0xff000000;
					} else {
						pixels[y * width + x] = 0xffffffff;
					}
				}
			}
			// 生成二维码图片的格式，使用ARGB_8888
			bitmap = Bitmap.createBitmap(width, height,
					Bitmap.Config.ARGB_8888);
			bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
			
		} catch (WriterException e) {
			e.printStackTrace();
		}
		return bitmap;
	}
}
